Author Question: A recent research study investigating weight loss in the morbidly obese, found a statistically ... (Read 77 times)

jon_i · **on:** Jul 8, 2018

A recent research study investigating weight loss in the morbidly obese,

found a statistically significant (p = 0.01) difference between subjects who followed an individually planned diet regimen with aerobic exercise and those in the treatment group, who also followed an individually planned diet regimen with aerobic exercise, but in addition, took a new medication. The medication, though extremely costly, created an additional 12 pound weight loss over the 3-month trial. What recommendations would be expected to come from this study?
a. Further research is suggested as the medication appears promising.
b. The findings are modest at best; the medication should not be recommended.
c. The medication can provide significant results for anyone needing to lose weight.
d. The expense is much too great to ever justify use of this medication.

Question 2

Which of the following are purposes of statistical analysis?

a. Prove the research hypothesis to be true.
b. Examine the numerical data gathered in a study. Provide insight into the meaning of the data.
c. Determine correct protocols for clinical research.
d. Prove the validity of a nursing theory.

vboyd24 · **Reply #1 on:** Jul 8, 2018

Answer to Question 1

ANS: A
Further research is definitely needed; there was some statistically significant weight loss, but not enough to warrant recommendation since it was extremely expensive and yielded a very small additional loss over 3 months. Nonetheless, for some patients it still might be an option if cost was not a factor and the need for weight loss was high. Additional research might show a more clinically significant amount of weight loss attributable to the medication.
The statistical and clinical findings are significant. The cost of the medication can be offset by the total weight loss. Recommendation to use is based upon the benefit-risk review, including clinical and statistical significance.
The findings are generalizable to the morbidly obese; not to all who fall in the spectrum of being overweight.
The statistical and clinical findings are significant. The cost of the medication can be offset by the total weight loss. Recommendation to use is based on the benefit-risk review, including clinical and statistical significance.

Answer to Question 2

ANS: B
Statistical analysis both examines numerical data and provides insight into its meaning.
Data analysis cannot prove the research hypothesis to be true; it can support the hypothesis.
Statistical analysis does not determine which protocols are best for a research study.
Statistical analysis cannot prove the validity of a nursing theory; it can provide support for the theory.